Biology Content Review for Living Environment Regents

This video is the second in a series aimed at helping students prepare for the New York State Regents Living Environment exam. It covers key ideas related to reproduction, meiosis, photosynthesis, cellular respiration, homeostasis, the immune system, ecosystems, and human impact on the environment. The video explains the processes of asexual and sexual reproduction, the importance of meiosis for genetic variation, and the roles of photosynthesis and cellular respiration in energy production. It also discusses how organisms maintain homeostasis, the function of the immune system, and the effects of human activities on ecosystems.

What is the result of sexual reproduction in terms of genetic information?

• Offspring receive a mix of genes from two different parents.

• Offspring undergo mutation to receive their genes.

• Offspring receive all their genes from one parent.

• Offspring are exact genetic copies of their parents.

How does meiosis contribute to genetic diversity?

• By reducing the chromosome number by half

• By increasing the number of chromosomes

• By mixing genetic material from two parents

• By duplicating genetic information exactly

What role do hormones play in human reproduction?

• They prevent the development of the embryo.

• They are only present in females.

• They regulate the reproductive cycle.

• They decrease genetic variation.

What is the significance of the placenta in fetal development?

• It is the primary site of meiosis.

• It serves as a source of nutrients and oxygen.

• It produces gametes for the fetus.

• It regulates the fetus's hormone levels.

What are the inputs required for photosynthesis?

• Oxygen and ATP

• Glucose and oxygen

• Carbon dioxide and water

• ATP and carbon dioxide

Which process converts sunlight into chemical energy?

• Photosynthesis

• Fermentation

• Mitosis

• Cellular respiration

What is the main purpose of cellular respiration?

• To eliminate carbon dioxide from organisms

• To create glucose for plant cells

• To produce water and oxygen

• To convert glucose and oxygen into energy

What is the relationship between photosynthesis and cellular respiration?

• Both processes occur in animal cells.

• They are unrelated processes.

• Photosynthesis consumes the products of cellular respiration.

• Cellular respiration uses the products of photosynthesis.

What is a major cause of habitat loss?

• Increased sunlight exposure

• Invasive species introduction

• Ozone layer depletion

• Global warming

What is the primary reason for the extinction of species?

• Overproduction of offspring

• Genetic mutations

• Habitat destruction

• Natural selection